4 #include "parse-options.h"
5 #include "parse-events.h"
9 extern char *strcasestr(const char *haystack, const char *needle);
13 struct perf_counter_attr attrs[MAX_COUNTERS];
22 #define CHW(x) .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_##x
23 #define CSW(x) .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_##x
25 static struct event_symbol event_symbols[] = {
26 { CHW(CPU_CYCLES), "cpu-cycles", "cycles" },
27 { CHW(INSTRUCTIONS), "instructions", "" },
28 { CHW(CACHE_REFERENCES), "cache-references", "" },
29 { CHW(CACHE_MISSES), "cache-misses", "" },
30 { CHW(BRANCH_INSTRUCTIONS), "branch-instructions", "branches" },
31 { CHW(BRANCH_MISSES), "branch-misses", "" },
32 { CHW(BUS_CYCLES), "bus-cycles", "" },
34 { CSW(CPU_CLOCK), "cpu-clock", "" },
35 { CSW(TASK_CLOCK), "task-clock", "" },
36 { CSW(PAGE_FAULTS), "page-faults", "faults" },
37 { CSW(PAGE_FAULTS_MIN), "minor-faults", "" },
38 { CSW(PAGE_FAULTS_MAJ), "major-faults", "" },
39 { CSW(CONTEXT_SWITCHES), "context-switches", "cs" },
40 { CSW(CPU_MIGRATIONS), "cpu-migrations", "migrations" },
43 #define __PERF_COUNTER_FIELD(config, name) \
44 ((config & PERF_COUNTER_##name##_MASK) >> PERF_COUNTER_##name##_SHIFT)
46 #define PERF_COUNTER_RAW(config) __PERF_COUNTER_FIELD(config, RAW)
47 #define PERF_COUNTER_CONFIG(config) __PERF_COUNTER_FIELD(config, CONFIG)
48 #define PERF_COUNTER_TYPE(config) __PERF_COUNTER_FIELD(config, TYPE)
49 #define PERF_COUNTER_ID(config) __PERF_COUNTER_FIELD(config, EVENT)
51 static char *hw_event_names[] = {
61 static char *sw_event_names[] = {
73 static char *hw_cache[][MAX_ALIASES] = {
74 { "L1-data", "l1-d", "l1d" },
75 { "L1-instruction", "l1-i", "l1i" },
77 { "Data-TLB", "dtlb", "d-tlb" },
78 { "Instruction-TLB", "itlb", "i-tlb" },
79 { "Branch", "bpu" , "btb", "bpc" },
82 static char *hw_cache_op[][MAX_ALIASES] = {
85 { "Prefetch", "speculative-read", "speculative-load" },
88 static char *hw_cache_result[][MAX_ALIASES] = {
89 { "Reference", "ops", "access" },
93 char *event_name(int counter)
95 u64 config = attrs[counter].config;
96 int type = attrs[counter].type;
99 if (attrs[counter].type == PERF_TYPE_RAW) {
100 sprintf(buf, "raw 0x%llx", config);
105 case PERF_TYPE_HARDWARE:
106 if (config < PERF_COUNT_HW_MAX)
107 return hw_event_names[config];
108 return "unknown-hardware";
110 case PERF_TYPE_HW_CACHE: {
111 u8 cache_type, cache_op, cache_result;
112 static char name[100];
114 cache_type = (config >> 0) & 0xff;
115 if (cache_type > PERF_COUNT_HW_CACHE_MAX)
116 return "unknown-ext-hardware-cache-type";
118 cache_op = (config >> 8) & 0xff;
119 if (cache_op > PERF_COUNT_HW_CACHE_OP_MAX)
120 return "unknown-ext-hardware-cache-op";
122 cache_result = (config >> 16) & 0xff;
123 if (cache_result > PERF_COUNT_HW_CACHE_RESULT_MAX)
124 return "unknown-ext-hardware-cache-result";
126 sprintf(name, "%s-Cache-%s-%ses",
127 hw_cache[cache_type][0],
128 hw_cache_op[cache_op][0],
129 hw_cache_result[cache_result][0]);
134 case PERF_TYPE_SOFTWARE:
135 if (config < PERF_COUNT_SW_MAX)
136 return sw_event_names[config];
137 return "unknown-software";
146 static int parse_aliases(const char *str, char *names[][MAX_ALIASES], int size)
150 for (i = 0; i < size; i++) {
151 for (j = 0; j < MAX_ALIASES; j++) {
154 if (strcasestr(str, names[i][j]))
163 parse_generic_hw_symbols(const char *str, struct perf_counter_attr *attr)
165 int cache_type = -1, cache_op = 0, cache_result = 0;
167 cache_type = parse_aliases(str, hw_cache, PERF_COUNT_HW_CACHE_MAX);
169 * No fallback - if we cannot get a clear cache type
172 if (cache_type == -1)
175 cache_op = parse_aliases(str, hw_cache_op, PERF_COUNT_HW_CACHE_OP_MAX);
177 * Fall back to reads:
180 cache_op = PERF_COUNT_HW_CACHE_OP_READ;
182 cache_result = parse_aliases(str, hw_cache_result,
183 PERF_COUNT_HW_CACHE_RESULT_MAX);
185 * Fall back to accesses:
187 if (cache_result == -1)
188 cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS;
190 attr->config = cache_type | (cache_op << 8) | (cache_result << 16);
191 attr->type = PERF_TYPE_HW_CACHE;
196 static int check_events(const char *str, unsigned int i)
198 if (!strncmp(str, event_symbols[i].symbol,
199 strlen(event_symbols[i].symbol)))
202 if (strlen(event_symbols[i].alias))
203 if (!strncmp(str, event_symbols[i].alias,
204 strlen(event_symbols[i].alias)))
210 * Each event can have multiple symbolic names.
211 * Symbolic names are (almost) exactly matched.
213 static int parse_event_symbols(const char *str, struct perf_counter_attr *attr)
218 const char *sep, *pstr;
220 if (str[0] == 'r' && hex2u64(str + 1, &config) > 0) {
221 attr->type = PERF_TYPE_RAW;
222 attr->config = config;
228 sep = strchr(pstr, ':');
233 sep = strchr(pstr, ':');
236 if (strchr(pstr, 'k'))
237 attr->exclude_user = 1;
238 if (strchr(pstr, 'u'))
239 attr->exclude_kernel = 1;
247 for (i = 0; i < ARRAY_SIZE(event_symbols); i++) {
248 if (check_events(str, i)) {
249 attr->type = event_symbols[i].type;
250 attr->config = event_symbols[i].config;
256 return parse_generic_hw_symbols(str, attr);
259 int parse_events(const struct option *opt, const char *str, int unset)
261 struct perf_counter_attr attr;
264 memset(&attr, 0, sizeof(attr));
266 if (nr_counters == MAX_COUNTERS)
269 ret = parse_event_symbols(str, &attr);
273 attrs[nr_counters] = attr;
276 str = strstr(str, ",");
285 static const char * const event_type_descriptors[] = {
290 "Hardware cache event",
294 * Print the help text for the event symbols:
296 void print_events(void)
298 struct event_symbol *syms = event_symbols;
299 unsigned int i, type, prev_type = -1;
302 fprintf(stderr, "\n");
303 fprintf(stderr, "List of pre-defined events (to be used in -e):\n");
305 for (i = 0; i < ARRAY_SIZE(event_symbols); i++, syms++) {
306 type = syms->type + 1;
307 if (type > ARRAY_SIZE(event_type_descriptors))
310 if (type != prev_type)
311 fprintf(stderr, "\n");
313 if (strlen(syms->alias))
314 sprintf(name, "%s OR %s", syms->symbol, syms->alias);
316 strcpy(name, syms->symbol);
317 fprintf(stderr, " %-40s [%s]\n", name,
318 event_type_descriptors[type]);
323 fprintf(stderr, "\n");
324 fprintf(stderr, " %-40s [raw hardware event descriptor]\n",
326 fprintf(stderr, "\n");